A long spar, beam or a-frame structure, to support a hoist.
Classification: Parts of pulley tackle and hoists other than skip hoists or hoists of a kind used for raising vehicles
NSN 5925-01-206-3488
NSN 6685-01-413-1505
NSN 6145-01-115-8258
NSN 5998-00-274-9201
NSN 5996-01-037-6786
NSN 6240-01-091-5185
NSN 6620-01-420-7465
NSN 6240-00-364-0850
NSN 4140-00-260-9521
NSN 5965-00-244-8428
NSN 5996-00-462-2533
NSN 6685-01-295-9415